Electro-static discharge and latch-up prevention circuit

Details Electro-static discharge and latch-up prevention circuit Electro-static discharge and latch-up prevention circuit

1996-03-28

1998-06-23

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361 58, 361118, H02H 322

Patent

active

057711402

ABSTRACT:
An improved electro-static discharge and latch-up prevention circuit capable of preventing circuit malfunctions caused by an electro-static discharge and permitting an integrated circuit, in which a bias condition is stable, to perform a signal input/output operation by applying an electro-static having a certain level having a limited range to the integrated circuit, which includes an electro-static discharge prevention unit provided in the interior of or at the outside of an integrated circuit and connected between a positive voltage and a negative voltage in series for preventing positive and negative electro-static discharges; a switching unit connected between the electro-static discharge prevention unit and the interior circuit of the integrated circuit chip for switching; and a control unit for outputting a control signal so as to control a switching operation of the switching unit.

REFERENCES:
patent: 4484244 (1984-11-01), Avery
patent: 4594633 (1986-06-01), Townsend et al.
patent: 4724471 (1988-02-01), Leuschner
patent: 4760433 (1988-07-01), Young et al.
patent: 5212616 (1993-05-01), Dhong et al.
patent: 5270589 (1993-12-01), Sawada
patent: 5473169 (1995-12-01), Her et al.

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